I have used the BS778B with Sport Prototype mirrors on my 2012 675R the fit is perfect no issues at all That same combo came off my 2007 CBR 600 RR .
If you go to this link you will see the difference between the different style of Adaptos http://www.pjsparts.com/catalog/prod...products_id=43
BTW the BS777B has the same style as the BS778B but its simply smaller in length by a fre MM

So you think that I could use both 777 and 724 with no problems? I have a 08 daytona

The difference in length is not that much the main issue if the holes for the adatptors lining up with the holes on the upper itself if I were you I would send an email to PJ http://www.pjsparts.com/catalog/contact_us.php and get his advise I personally believe both of them will work but PJ will know for sure